Co2 From Ph Amd Kh

[alanchown]

I know I have seen the equation a million times, but sods law says when I need it I can't find it. If I know the PH and KH whats the equation- I want to put it into a spreadsheet, so need the equation. It's not beause I have become obsessed witht these things, but I thought I could teach the kids a bit about spreadsheets whilst playing with the tank

 

[DarkSeraph]

CO2 (in PPM) = 3 * KH * 10^( 7-pH )

http/www.csd.net/~cgadd/aqua/art_plant_co2chart.htm